Răspuns :
P=40 cm
p=2 (l+L)
L=3l
2 (l+3l)=40cm/:2
4l=20 cm/:4
l=5cm
L=5×3=15cm
A= 5cm×15cm=75 cm patrati
Răspuns: 75 cm patrati
Sper ca te-am ajutat!
p=2 (l+L)
L=3l
2 (l+3l)=40cm/:2
4l=20 cm/:4
l=5cm
L=5×3=15cm
A= 5cm×15cm=75 cm patrati
Răspuns: 75 cm patrati
Sper ca te-am ajutat!